What this extension does NOT:This is no standalone download manager. You need JDownloader installed on yoursystem and connected to MyJDownloader.

-----------------JDownloader is a free, open-source download management tool with a huge community of developers that makes downloading as easy and fast as it should be. Users can start, stop or pause downloads, set bandwith limitations, auto-extract archives and much more. It's an easy-to-extend framework that can save hours of your valuable time every day!